{
  "annotation_id": "c99d8911-271f-4e9b-b30f-8c9a585b9a27",
  "date_created": "2026-03-02T18:02:27.177000Z",
  "date_modified": "2026-03-02T18:02:27.177000Z",
  "file_hash": "e87b1cbf37a0125842e35882932b86b5893e7bc29d8be5a3621f8b12b108dcf0",
  "private": false,
  "record": {
    "abstract": "We study the relationship between the entanglement, mixedness and energy of\ntwo-qubit and two-mode Gaussian quantum states. We parametrize the set of\nallowed states of these two fundamentally different physical systems using\nmeasures of entanglement, mixedness and energy that allow us to compare and\ncontrast the two systems using a phase diagram. This phase diagram enables one\nto clearly identify not only the physically allowed states, but the set of\nstates connected under an arbitrary quantum operation. We pay particular\nattention to the maximally entangled mixed states (MEMS) of each system.\nFollowing this we investigate how efficiently one may transfer entanglement\nfrom two-mode to two-qubit states.",
    "arxiv_id": "quant-ph/0607012",
    "authors": [
      "Derek McHugh",
      "Mario Ziman",
      "Vladimir Buzek"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.74.042303",
    "title": "Entanglement, purity and energy: Two qubits vs Two modes",
    "url": "https://arxiv.org/abs/quant-ph/0607012"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9c13121d-134b-4b46-83da-bfc66c0ab90a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}